Protocols for the Identification of Phyllosphere-Induced Pollutant Degradation Genes

2015 ◽  
pp. 229-235
Author(s):  
Tanja R. Scheublin
Keyword(s):  
Pollutant Degradation

Simplistic Synthesis and Enhanced Photocatalytic Performance of Spherical ZnO Nanoparticles Prepared from Arabinose Solution

2019 ◽  
Vol 74 (10) ◽  
pp. 937-944 ◽  
Author(s):  
Babiker Y. Abdulkhair ◽  
Mutaz E. Salih ◽  
Nuha Y. Elamin ◽  
A. MA. Fatima ◽  
A. Modwi
Keyword(s):  
Zno Nanoparticles ◽  
Photocatalytic Performance ◽  
Hexagonal Wurtzite Structure ◽  
Zinc Nitrate ◽  
Wurtzite Structure ◽  
Sugar Solution ◽  
X Ray Diffraction ◽  
Pollutant Degradation ◽  
X Ray ◽  
Good Crystallinity

AbstractStrenuous efforts have been employed to prepare zinc oxide (ZnO) with eco-friendly methods; however, few studies have reported the fabrication of ZnO using a sustainable procedure. In this study, spherical ZnO nanoparticles were successfully fabricated for photocatalysis applications using a simple and eco-friendly method using an arabinose sugar solution. The ZnO nanoparticles with a wurtzite structure were obtained by combining zinc nitrate and arabinose in water, followed by heating, evaporation, and calcinations at different annealing temperatures. The annealed ZnO photocatalysts were characterised via X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The findings revealed a hexagonal wurtzite structure and good crystallinity with crystallite size increasing from 18 to 31 nm by means of an increase in the annealing temperature. The photocatalytic performance was examined to determine the degradation of mix dye waste. The spherical ZnO nanoparticles showed mix pollutant degradation of 84 % in 25 min at 400 °C.

scholarly journals Efficient Photocatalytic Degradation of Gaseous Benzene and Toluene over Novel Hybrid PIL@TiO2/m-GO Composites

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 126 ◽  
Author(s):  
Shayeste Shajari ◽  
Elaheh Kowsari ◽  
Naemeh Seifvand ◽  
Farshad Boorboor Ajdari ◽  
Amutha Chinnappan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Toluene Degradation ◽  
Pollutant Degradation ◽  
Polymerized Ionic Liquid ◽  
Photodegradation Rate ◽  
Microstructural Morphology ◽  
Degradation Activity ◽  
Poly Ionic Liquid ◽  
Optimized Conditions ◽  
Gaseous Benzene

In this work, the PIL (poly ionic liquid)@TiO2 composite was designed with two polymerized ionic liquid concentrations (low and high) and evaluated for pollutant degradation activity for benzene and toluene. The results showed that PIL (low)@TiO2 composite was more active than PIL (high)@TiO2 composites. The photodegradation rate of benzene and toluene pollutants by PIL (low)@TiO2 and PIL (high)@TiO2 composites was obtained as 86% and 74%, and 59% and 46%, respectively, under optimized conditions. The bandgap of TiO2 was markedly lowered (3.2 eV to 2.2 eV) due to the formation of PIL (low)@TiO2 composite. Besides, graphene oxide (GO) was used to grow the nano-photocatalysts’ specific surface area. The as-synthesized PIL (low)@TiO2@GO composite showed higher efficiency for benzene and toluene degradation which corresponds to 91% and 83%, respectively. The resultant novel hybrid photocatalyst (PIL@TiO2/m-GO) was prepared and appropriately characterized for their microstructural, morphology, and catalytic properties. Among the studied photocatalysts, the PIL (low)@TiO2@m-GO composite exhibits the highest activity in the degradation of benzene (97%) and toluene (97%). The ultimate bandgap of the composite reached 2.1 eV. Our results showed that the as-prepared composites hold an essential role for future considerations over organic pollutants.

Bimetallic Fe/In metal-organic frameworks boosting charge transfer for enhancing pollutant degradation in wastewater

2020 ◽  
Vol 528 ◽  
pp. 147053 ◽  
Author(s):  
Siqi Wang ◽  
Fanqi Meng ◽  
Xuejiao Sun ◽  
Mingjun Bao ◽  
Jiawen Ren ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Metal Organic Frameworks ◽  
Pollutant Degradation ◽  
Metal Organic
Sign in / Sign up

Export Citation Format

Share Document